TY - JOUR
T1 - Thermoplastic Membranes Incorporating Semiconductive Metal–Organic Frameworks
T2 - An Advance on Flexible X-ray Detectors
AU - Liang, Chengyu
AU - Zhang, Shitong
AU - Cheng, Liwei
AU - Xie, Jian
AU - Zhai, Fuwan
AU - He, Yihui
AU - Wang, Yaxing
AU - Chai, Zhifang
AU - Wang, Shuao
N1 - Funding Information:
We are grateful for funding from the National Natural Science Foundation of China (21825601, 21790374, 21806118, 21727801). The computational work was partially supported by the National Supercomputing Center in Shenzhen.
Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/7/13
Y1 - 2020/7/13
N2 - Semiconductive metal–organic frameworks (MOFs) have emerged in applications such as chemical sensors, electrocatalysts, energy storage materials, and electronic devices. However, examples of semiconductive MOFs within flexible electronics have not been reported. We present flexible X-ray detectors prepared by thermoplastic dispersal of a semiconductive MOF (SCU-13) through a commercially available polymer, poly(vinylidene fluoride). The flexible detectors exhibit efficient X-ray-to-electric current conversion with enhanced charge-carrier mobility and low trap density compared to pelleted devices. A high X-ray detection sensitivity of 65.86 μCGyair−1 cm−2 was achieved, which outperforms other pelleted devices and commercial flexible X-ray detectors. We demonstrate that the MOF-based flexible detectors can be operated at multiple bending angles without a deterioration in detection performance. As a proof-of-concept, an X-ray phase contrast under bending conditions was constructed using a 5×5 pixelated MOF-based imager.
AB - Semiconductive metal–organic frameworks (MOFs) have emerged in applications such as chemical sensors, electrocatalysts, energy storage materials, and electronic devices. However, examples of semiconductive MOFs within flexible electronics have not been reported. We present flexible X-ray detectors prepared by thermoplastic dispersal of a semiconductive MOF (SCU-13) through a commercially available polymer, poly(vinylidene fluoride). The flexible detectors exhibit efficient X-ray-to-electric current conversion with enhanced charge-carrier mobility and low trap density compared to pelleted devices. A high X-ray detection sensitivity of 65.86 μCGyair−1 cm−2 was achieved, which outperforms other pelleted devices and commercial flexible X-ray detectors. We demonstrate that the MOF-based flexible detectors can be operated at multiple bending angles without a deterioration in detection performance. As a proof-of-concept, an X-ray phase contrast under bending conditions was constructed using a 5×5 pixelated MOF-based imager.
KW - charge transport
KW - flexible materials
KW - metal–organic frameworks
KW - mixed matrix membranes
KW - semiconductors
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U2 - 10.1002/anie.202004006
DO - 10.1002/anie.202004006
M3 - Article
C2 - 32270587
AN - SCOPUS:85084479131
VL - 59
SP - 11856
EP - 11860
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 29
ER -